New documents revealed on Monday show the U.S. National Security Agency has the capability of deploying software implants on Apple's iPhone that grants remote access to on-board assets like SMS messages, location data and microphone audio.

In a talk at the Chaos Communications Congress in Germany, security researcher Jacob Appelbaum summarized the NSA's iPhone-targeting spyware program called "DROPOUTJEEP" as part of abroader discussion dealing with the agency's controversial electronic surveillance initiative, reportsThe Daily Dot.

As it pertains to Apple's smartphone, the findings — concurrently published by German magazineDer Spiegel — are limited to a single top secret document dating back to 2008. The page details DROPOUTJEEP's basic operational structure and capabilities, which include the interception of SMS messages, access to on-board data, microphone activation and approximate positioning via cell tower location. All communication takes place covertly over SMS or GPRS data protocols.

While a startling revelation, DROPOUTJEEP's proliferation within the iPhone community is largely unknown. The NSA boasts a 100 percent success rate for implanting the spyware on iOS devices, Appelbaum said, but the document suggests physical contact with a target phone is required to implant the surreptitious software. In practice, the method is likely similar to a consumer jailbreak looking for root device access.

To this point, Appelbaum alludes to complicit involvement by Apple, but tempers his — so far baseless — allegation with "I can't really prove it."

I don't really believe that Apple didn't help them," Appelbaum said. "I can't really prove it yet, but [the NSA] literally claim that anytime they target an iOS device, that it will succeed for implantation. Either they have a huge collection of exploits that work against Apple products, meaning that they are hoarding information about critical systems that American companies produce and sabotaging them, or Apple sabotaged it themselves. Not sure which one it is. I'd like to believe that since Apple didn't join the PRISM program until after Steve Jobs died, that maybe it's just that they write [expletive redacted] software. We know that's true.

A more efficient delivery mechanism is remote installation, something the NSA said was being "pursued for future release." Once again, it is unknown if the agency moved forward with such a system in the intervening five years since the document was first issued.

Video of Appelbaum's talk with iPhone discussion starting at around 44:30: